顯示matplotlib圖的視窗沒有添加滾動條的選項。它将自動将其大小調整為圖形大小。相反，如果調整大小，圖形也将調整大小。
一種選擇是建立一個具有此功能的自定義視窗。為此，可以使用PyQt。下面給出一個示例，該示例plt.show()以圖形作為參數來調用，而不是調用自定義類。圖形的大小應fig事先設定為圖形，并且該自定義類不會更改它。而是将圖形放入帶有滾動條的畫布中，以便圖形保留其原始大小，并可以在Qt視窗中滾動。您不必處理類内的詳細資訊，而隻需處理腳本末尾的調用即可。
本示例适用于PyQt4，請參見下文中的PyQt5示例。
import matplotlib.pyplot as plt
from PyQt4 import QtGui
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QT as NavigationToolbar
class ScrollableWindow(QtGui.QMainWindow):
def __init__(self, fig):
self.qapp = QtGui.QApplication([])
QtGui.QMainWindow.__init__(self)
self.widget = QtGui.QWidget()
self.setCentralWidget(self.widget)
self.widget.setLayout(QtGui.QVBoxLayout())
self.widget.layout().setContentsMargins(0,0,0,0)
self.widget.layout().setSpacing(0)
self.fig = fig
self.canvas = FigureCanvas(self.fig)
self.canvas.draw()
self.scroll = QtGui.QScrollArea(self.widget)
self.scroll.setWidget(self.canvas)
self.nav = NavigationToolbar(self.canvas, self.widget)
self.widget.layout().addWidget(self.nav)
self.widget.layout().addWidget(self.scroll)
self.show()
exit(self.qapp.exec_())
# create a figure and some subplots
fig, axes = plt.subplots(ncols=4, nrows=5, figsize=(16,16))
for ax in axes.flatten():
ax.plot([2,3,5,1])
# pass the figure to the custom window
a = ScrollableWindow(fig)
在此處輸入圖檔說明
這是PyQt5的版本。
import matplotlib
# Make sure that we are using QT5
matplotlib.use('Qt5Agg')
import matplotlib.pyplot as plt
from PyQt5 import QtWidgets
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
class ScrollableWindow(QtWidgets.QMainWindow):
def __init__(self, fig):
self.qapp = QtWidgets.QApplication([])
QtWidgets.QMainWindow.__init__(self)
self.widget = QtWidgets.QWidget()
self.setCentralWidget(self.widget)
self.widget.setLayout(QtWidgets.QVBoxLayout())
self.widget.layout().setContentsMargins(0,0,0,0)
self.widget.layout().setSpacing(0)
self.fig = fig
self.canvas = FigureCanvas(self.fig)
self.canvas.draw()
self.scroll = QtWidgets.QScrollArea(self.widget)
self.scroll.setWidget(self.canvas)
self.nav = NavigationToolbar(self.canvas, self.widget)
self.widget.layout().addWidget(self.nav)
self.widget.layout().addWidget(self.scroll)
self.show()
exit(self.qapp.exec_())
# create a figure and some subplots
fig, axes = plt.subplots(ncols=4, nrows=5, figsize=(16,16))
for ax in axes.flatten():
ax.plot([2,3,5,1])
# pass the figure to the custom window
a = ScrollableWindow(fig)
雖然此答案顯示了一種滾動完整圖形的方法